Node, Tree & Tile Editor!

   

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You link/unlink nodes (I called them entities! XD) by right-click-dragging between them.
You copy stuff by right-click-dragging to an empty space.
You delete by grabbing something by left-click-holding and pressing the delete key.
Oh, and nodes are completely tree structure expandable, just drag-drop attributes on nodes and nodes inside nodes.
(I know, not super intuitive; but very handy once you know about these.)
The editor uses lightweight rendering so you can have a ton of elements with good performance.
Edit: In practice I use this for relational database schemas and sprite sheet cutting. ^
But it has been used by others successfully for game scripting (dialogue, story etc.) by Glu mobile game Stranded f.ex.

For schema-less HTTP+JSON-file distributed database you can use root

For SQL you can still find sources here 1 2 3

Should work with MySQL (MariaDB), Postgres and Oracle.


* is primary key(s)
~ means don't let this screw up the multiple cross ref.
digits means how much char length should be indexed
! means mandatory
 We officially support Java 24 on 64-bit:
Windows X64 
Mac X64 | ARM 
Linux X64 | ARM | Risc-V
To run on windows/linux:

jdk-24-lite\bin\java -jar node.jar
jdk-24-lite/bin/java -jar node.jar

Example assets by Kenney and Loren Schmidt. (Right click "Save Link As...", then "Open...")



In the defence of XML; It's actually not that bad for describing things because 
JSON is harder to read and can't do ordered maps or relations without problems:
Collada between editor and binary format (avoids custom exporter and you can read it, 
I would argue superior to both FBX and GLTF because older and more stable in most editors)
DB Schemas and network protocol definitions, not transport.
Asset collections (sprites and tiles as png in base64)